Samuel Lloyd Osbourne (April 7, 1868 – May 22, 1947) was an American author and the stepson of the Scottish author Robert Louis Stevenson, with whom he co-authored three books, including The Wrecker. He also provided input and ideas on others. Osbourne wrote a number of stories and essays on his own, including An Intimate Portrait of R L S By His Stepson (1924). Source: Wikipedia (en)